Button-sewing machine.



PATENTED AUG. 14 1906.

C. A. DAEL. BUTTON SEWING MACHINE.

APPLICATION FILED DEOJZ, 1905.

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15101828344. 'PA-TENTED AUG. 14, 1906.

0.. A. DAHL. BUTTON SEWING MACHINE.

APPLICATION FILED DBC.12,1905- i Icz eve Zcw.

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nnrrnn srarns Farmer orricn ()i-lAltLES A. [)AHL, OF BOSTON. MASSACHUSETTS, ASSlGNOlt TO THE 7 REEOE BUTTONHOLE MACHINE COMPANY, OF BOSTON, MASSA OHUSETTS. A CORPORATION OF MAINE.

BUTTON-SEWlNG lWACHiNE,

no. cease/1..

Specification of Letters Patent.

Patented Au 14, 1906.

Application filed December 12. 1905- Serial No. 291.451-

To all w/mm it 11mg concern..-

Be it known that'l, CHAnLEs A. DAHL, a citizen of the United States, and a resident of Boston, county of Suffolk, State of Massachusctts, have invented an Improvement in Button-Sewing Machines, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to the class of machine for sewing on buttons substantially as represented in United States Patent N 0. 336,881, dated February 23, 1886.

In accordance with my invention 1 have combined with the button-stitching mechanism means whereby it is possible to not only insure an elevated position for the hooked needle whenever the machine is stopped, but also to enable the main shaft otthe machine to be turned backwardly while the needle is in its elevated position, the backward movement of the shaft lifting the needle from stopped position. to its highest point and at the same time moving the needle backwardly. During this rising and backward movement of the needle the delivery end of the raceway is also moved bac'kwardly and diagonally outwardly from the path of the needle, so that the operatorv may have access to the parts at the lower end. of the raceway and in sure the proper position for the eye of the button that said button may be stitched to thc material. The eye of the button having been placed in proper'position at the delivery end of the raceway, the main shaft of the machine will be started forwardly, and immediately the raceway will be moved into its delivery position and the needle moving down-. wardl y in its descent will enter the eye of the button.

Figure 1 in side elevation represents. a sufficient portion of a button-stitching machine withmy improvements addedto enable my invention to be understood Fig. 2 is a detail of the cam employed for working the needle and feed. Fig. 3 is a detail showing the delivery end of the race'wayland the hooked needle, a cast-off coacting therewith, the needle entermg'the eye-of a button, and

. the presscr-foot and part of thc-work-support.

Fig. 4 isa detail showing the upper end of the from t per or starting position, the machine being at rest. Fig. 6 is a view of the same parts, the operator having moved the dog to release the clutch and its pawl. Fig. 7 shows detached the hub to be referred to, together with the dog pivoted thereto. Fig. 8 is a detail showing the main shaft in elevation, the beltwheel and the hand-wheel being in section.

Referring to the drawings, Brepresents a work-supportin arm suitably sustained by a base part provi ed with bearings for a shaft R, provided with a series of cams to be de* scribed. E represents a neck or arm forming part of the framework H, a carrier or sliding frame having suitable hearings to sustain the needle-bar F and cast-off bar G. or right-hand end of the carrier has connected thereto a lover a, (see Fig. 2,) pivoted at a and provided with a lever a, upon which is mounted a roller a", said roller being acted upon by the surface ctof, a cam fast on the shaft R to vary the movement of the. lever, and consequently the extent of sliding movement of the carrier H.

The lever a is provided with an adjusting device (1 shown as a screw that may be turned, the screw acting on the end of the le ver a and. changingthe normal position of the lever a to provide for spacing the buttons, a spring at acting to keep the roll (1 in contact with its cam. The upper side of the arm E has connected. therewith by bolts (1 a stand 60 Figs. 1 and 4) receives a rocker a provided with a stud (t that'is extended-through a hole in the stand and has applied to it a nut a a washer a being interposed between the 'nut and the stand.

The rocker a receives a stud'or bolt 6, that constitutes a pivot for the button-r2iceuny b, said raceway haying as a part thereof a hopper b and a portion which receives any usual membeiyas a brush, that insures the proper traveling of-the buttons thrown into the ho perinto the-.racewayto be taken lib lower or delivery end thereof, the heads ofth'e buttons in traversing the raceway sliding over the face b of the raceway.

The rear The upper end of the stand (seesustain the button to be stitched to the ma terial, and the eye oi the button is permitted.

to extend outwardly from the path of the needle, as shown in Fig. 3. The lower end of the raceway has a pivoted gate 7, controlled by a spring surrounding a stud 6, which. also constitutes a pivot for the gate.

The needle-bar derives its movement through. a lever J, pivoted at K and provided at itsend with a link T, the lower end of which is slotted to embrace the shaft R, said link having a roller or other stud that enters a cam-groove 21 (shown by dotted lines) in one of the cams fast on the shaft R.

The button-raceway has connected with it an arm a, slotted at. c to receive a clamping screw carried by a depending stand 0 with which is joined at c a block 0 provided with an upright stud c, a orked lever L straddling said pin, said forked. lever, common to United- States Patent No. 336,881, serving when the rod 9, joined to the block 0'', is moved rearwardly by or through its con nection with the lever 9 to impart to the raceway an outward movement that the button at'the end of the raceway and in the eye of which the needle stands maybe detached from the raceway.

The presser-foot h in its operation is made i to clamp the stock while the needle is penetrat'ing the same, ithaving usual means for raising the same to unclamp thestock while the needle therein feeds the same ove the work-support.

The hooked thread, as provided for in said patents, by a thread-carrier located in the work-support, and the needle. after it has passed through the eye of the button and the material will draw a loop of thread up through the material and the eye of the button, when the needle will. again descend outside theeye of the button and through the first loop and enter the stock, and the needle will: then be moved laterally to feed the stock, and the'next loop drawn up bythe needle will be manipulated, as fully illustrated in Patent No. 336,881,

which serves to cast theloop over the head of.

the button, the stitch being such as'represented in United States Patent No.- 268,370, dated November 28, 1882.

The parts so far described are common to and are fully described in United States Patent to Mathison, No. 268,369, dated Noveinbar-28, 1882, and Nos. 336,880 and 336,881, dated February 23,1886, so that particular 0 eration of the parts neednot be herein furt erdescribed, it being understood that the .needl-ebar and its reciprocating movements actuates the cast-oii, as fully provided for in said patents. and that the needle feeds the stock. V I

The invention to be herein claimed lies Increespecially in provision for turning backneedle will be supplied witha wardly the main shaft ol the machine allrr said shalt has been automatically stopped with the needle out oi the u'ia-lcrial, the new dle having failed. in its previous descent to enter the eye of the button. With the machine stopped, as stated before, a skipped button may be supplied; but to do so it becomes necessary to turn the main shaft bach- Wardly to raise the needle and move the same backwardly and at the same time to move the lower end of the raceway backwardly and outwardly to thereby expose to the ready access of the operator the endmost button in the raceway, that said button may be properly located thereinand its eye be made to project properly from the raceway that it may be entered by the needle when the main shaft of the machine is again started torw ardly, which may be done either by hand or through the regular starting or powertransmitting devices. Prior to starting the main shaft of the machine after having turned the shaft backwardly and adjusted. the button correctly in the lower end of the raceway the operator will raise the presserfoot, engage the stock thereimder, and draw the same forwardly until the hole made by the needle in its last descent where it failed to enter the'eye of the button has been brought into the ath of the needle. This provision enables t e needle when the machine is again started and the main shaft turned forwardly to not only pass through the eye of a button, but enter the same hole in the material.

The shaft R has screwed to'it by a screw g a hub g, having a notch 71 This hub has a hole that receives loosely a circular portion 9 of a clutch dog or device 9 having a tailpiece 5], that at times engages one or the other of a series of pockets 3, (shown in Fig. 5 as six in number) cut in the inner si le of a plate D" ,bol ted to aclutch-pulley D, loose on shaft it and driven continuously during the regular operation of the machine through a belt thereon. that is driven in usual manner from a second beltpulley, (not shown,) adapted to be clutched to a power-driven shaft of any usual transmitter commonly employed to start and stop sewing-machines, it being understood that when said. clutch-pulley is unclutched from said shaft its rotation will be stopped in a forward1y-projecting wing 9 'that'is conveXed at 10 to act against the part g of the clutch device or dogg The belt-pulley is loose-on and turns the shaft, only when the tailpiece g of the dog enters one of the pockets 3. ()n 'a stud h of the framework is pivoted a dog-holder h, wit] which is connected a link. iii-leading to a treadle or other manually-controlled device, (not shown,') said link being surrounded by a suitable spring 14, that acts normally to put the dog-holder in the position Fig. 5, where said dog-holder acts against the dog 9 and retains the tailpiece thereof disengaged from the pockets of the loose pulley D. The dog holder has a depending car 20, on which is pivoted a pawl h" of elbow shape, the short arm of said pawl having a pin over which is hooked one end of a spring its, the opposite end of which engages a pin 41 of the holder 71 said spring acting normallyto keep the long end of said pawl borne toward the hub g.

- When the operator discovers that the needle has failed to enter correctly the eye of a button, she immediately releases the usual 'foot-treadle and permits the spring 14 to move the dog-holder into the position Fig. 5 to stop the machine, when the free end. of said dog-holder meets the dog 9 and immediately turns the latter, so that its tailpiece g retires from one of the pockets 3, and imme- .gdiatelythe pawl h is moved through the action of the spring 7r to engage the notch h of the hub g, which prevents any rebounding of said hub. While the pawl 7 engages the notch h of saidhub the tendency of the spring h to actan'd turn the-tail end of the pawl upwardly to enter one of the pockets 3 in the loose pulley or belt wheel is overcome, and the hub is held firmlyagainst rotation by the pawl h.

After stopping the machine through the contact of thedog-holder with said dog the operator will stop the rotation of the said pulley by disconnecting or unclutching the same through the usual transmitter, leaving said pulley looseon shaft R and capable'of being turned backwardly thereon or in a direction opposite its regular direction of movement, which is designated by. the arrows 22.

When the machine has been stopped, as stated, the point of the ascending needle will be arrested in about the position shown in Fig. 3; but the button shown in-Fig. 3 will not be there.

Having stopped the pulley D and also the shaft, as stated, the operator will put her foot on the usual treadle controlling the dogholder and will depress the treadle, turning said holder from theposition Fig. 5 into the position Fig. 6, and as said. holder is so moved the pawl 7L9 will meet the pin 16, that acts as a fulcrum for said pawl and turns the pawl aside, as shown in Fig. 6, sulliciently to remove said pawl from the notch 10.

With the parts .in the condition Fig. 6 the operator may engage the hand-whecl R and turn the main shaft R baclnvard-ly for a short distance, which will move the lever J and. carrier ll in such direction as to raise the needle-bar in. the carrier II and slide said carrier, with the needlebar and need lc, hacle wardly. At the same time through the link 9 the lower end of the raceway will be moved. bacliwardly and the lever ll (see Figs. 1 and 4 will cause the lower end of the raceway to be moved outwardly, so positioning the de livery end of the raceway that the operator may have free access to the endmost button. in. the raceway that the eye of said button may be so presented that it may be entered by the needle when the machine is again started, causing the first ofthe oncoming pockets of said pulley to act on the tailpiece g of the clutch device to immediate] y start the shaft R forwardly,which done the ear rier H will be moved forwzn'dly and the needle-bar therein will be made to descend,

and at this same time the lower or delivery end of the raceway will be moved inwardly and forwardly to place the eye of the button in the path of the descending needle that said button may be sewed to the stock.

-When the shaftR is being turned haclo wardly from the position Fig. 6 by or through the hand-wheel preparatory to get ting the endmo'st button of the raceway in position to be sewed to the stock, the tailpiece g of the dog in engagement with a pocket 3 of the loose pulley 1) turns said loose pulley backwardly and the tailpiece keeps its engagement with said pocket, so

that whenever the pulley D is again started forwardly by power it will act instantly to start the shaft R forwardly. While the parts are in the condition shown in Fig. 6, the operator, through the hand-wheel, may turn the main shaftR both backwardly and forwardly, as may be desired, preparatory to starting the machine by power and making the pulley D effective as the driver for said shaft.

wardly, the button having been correctly placed, the needle willenter the eye of the button. and'will secure the same to the material, and as many buttons may 'be set as may be necessary, one at each rotation of the main shaft, or so long as the operator maintains the dog-holder so that it does not arrest the dog.

Having fully described my invention, what I claim as new,'and desire to secure by Let ters Patent, is i 1.111 a button-sewing machine, buttonsewing mechanism, a raceway to deliver buttons, a shaft. having a hand-wheel, means moved by said shaft to actuate said mechanism and raceway, a pocketed pulley loose said shaft, a notched hub fast on said shaft and provided with a dog having a tailpiece, and a dog-holder having a connected pawl to engage the notch of said hub when the dogholder is in engagement with the said dog, said pawl preventing rebounding of the shaft,

After the main shafthas been started for-- dog and vholder is turned to release said. dog.

2, In a button-sewing machine, buttonse'wing mechanism, a raceway to deliver buttons, a shaft having a hand-wheel, means moved by said shaft to actuate said mechanism and raceway, apocketed pulley loose on said shaft, a notched hub fast on said shaft and provided with a dog having a tailpiece which projects beyond the exterior periphcry of the said loose pulley, and a dog-holder mounted exterior to said pulley and adapted to enga e the aforesaid tailpiece of the said a pawl pivotally mounted. on said dog-holder and adapted to engage the notch of said hub when the dog-holder is in engagement with said. dog, said pawl preventingrebounding of the shaft.

3. In a button sewing machine, buttonsewing mechanism, a raceway to deliver bu ttons, a shaft having a hand-wheel, means moved by said shaft to actuate said. mechanismland raceway, a pocketed pulley loose on said ,shaft, a notched hub fast on said shaft and provided with a dog having a tailpiece projecting beyond the exterior periphery of said loose pulley, a spring mounted on the aforesaid hub and bearing directly on the locking end of said dog whereby said dog is normally held in engagement with one of the pockets of the said pocketed pulley, a (logholder pivotally mounted exterior to the aforesaid loose pulley and adapted to engage notch in the aforesaid hub at such time as the dog-hold er engages the dog.

4:. In a button-sewing machine, buttonsewing mechanism, a raceway to deliver but tons, a shaft having a hand-wheel, means moved by said shaft to actuate said mechanism and raceway, a pocketed pulley loose on said shaft, a notched hub fast on said shaft and provided with a dog having a tailpiece which projects beyond the exterior periphery of the said loose pulley, a dog-holder pivotally mounted exterior to said loose pulley and adapted to engage the tailpiece of said dog, said dog-holder being provided with a depending ear, a pawl pivotally mounted in such ear and adapted to engage the notch in the,

aforesaid hub at such time as the said dogholder engages the said dog and means for automatically disengaging such pawl simultaneously with the disengagement of the dog and dog-holder.

In. testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. 1

CHARLES A. DAHL.

Wi tnesses: 

